[Improve](http) add timeout and waitForContinue config for sink httpclient #522
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Proposed changes
Issue Number: close #xxx
Problem Summary:
Currently, the default auto-redirect=true, the normal process is: request FE -> FE returns 307 -> get BE address and send data
If FE (high pressure/ FullGC/ network problem), etc., waiting for the 307 response will be slow, HttpClient will send data first after judging that the waiting timeout (refer to here https://github.com/apache/httpcomponents-core/blob/rel/v4.4.13/httpcore/src/main/java/org/apache/http/protocol/HttpRequestExecutor.java#L219-L239), because InpustStreamEntity cannot be read repeatedly, an error will be reported.
The solution is to increase the waitForContinue time to avoid errors caused by jitter.
The following is a partial request process. When Read timed out, data will be sent actively. After receiving 307 again, an error will be reported because it cannot be consumed repeatedly.
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